x^2 + x + 1
x^3 + x^2 + 1
x^4 + x^3 + 1
x^5 + x^3 + 1
x^6 + x^5 + 1
x^7 + x^6 + 1
x^8 + x^6 + x^5 + x^4 + 1
x^9 + x^5 + 1
x^{10} + x^7 + 1
x^{11} + x^9 + 1
x^{12} + x^{11} + x^{10} + x^4 + 1
x^{13} + x^{12} + x^{11} + x^8 + 1
x^{14} + x^{13} + x^{12} + x^2 + 1
x^{15} + x^{14} + 1
x^{16} + x^{14} + x^{13} + x^{11} + 1
x^{17} + x^{14} + 1
x^{18} + x^{11} + 1
x^{19} + x^{18} + x^{17} + x^{14} + 1
